refractometer¶
Density profile refractometer diagnostic
Maximum occurrences (MDS+ backend only): 2
New in version 3.31.0: lifecycle status alpha
Changed in version 3.33.0.
ids_propertiesstructure¶
See common IDS structure reference: ids_properties.
typeSTR_0D¶Type of refractometer (differential, impulse, …)
Type of refractometer (differential, impulse, …)
channel(i1)AoS¶Set of channels, e.g. […]
Set of channels, e.g. different reception antennas of the refractometer
Maximum occurrences (MDS+ backend only): 5
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channel(i1)/nameSTR_0D¶Short string identifier (unique for a given device)
Short string identifier (unique for a given device)
channel(i1)/descriptionSTR_0D¶Description, e.g. […]
Description, e.g. “channel viewing the upper divertor”
New in version >3.
channel(i1)/line_of_sightstructure¶Description of the line of sight. […]
Description of the line of sight. The first point corresponds to the probing wave emission point. The second point corresponds to the probing wave detection point
channel(i1)/line_of_sight/first_pointstructure¶Position of the first point
Position of the first point
channel(i1)/bandwidth(i2)AoS¶Set of frequency bandwidths
Set of frequency bandwidths
Maximum occurrences (MDS+ backend only): 10
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channel(i1)/bandwidth(i2)/frequency_main ⇹HzFLT_0D¶Main frequency used to probe the plasma (before upshifting and […]
Main frequency used to probe the plasma (before upshifting and modulating)
channel(i1)/bandwidth(i2)/phase(:) ⇹radFLT_1D¶Phase of the envelope of the probing signal, relative to the […]
Phase of the envelope of the probing signal, relative to the phase at launch
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New in version >3.32.1.
channel(i1)/bandwidth(i2)/i_component(:,:) ⇹VFLT_2D¶I component of the IQ detector used to retrieve the phase of […]
I component of the IQ detector used to retrieve the phase of signal’s envelope, sampled on a high resolution time_detector grid just before each measurement time slice represented by the ../time vector
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New in version >3.32.1.
channel(i1)/bandwidth(i2)/q_component(:,:) ⇹VFLT_2D¶Q component of the IQ detector used to retrieve the phase of […]
Q component of the IQ detector used to retrieve the phase of signal’s envelope, sampled on a high resolution time_detector grid just before each measurement time slice represented by the ../time vector
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2 |
New in version >3.32.1.
channel(i1)/bandwidth(i2)/n_e_linem^-2structure¶Integral of the electron density along the line of sight, deduced […]
Integral of the electron density along the line of sight, deduced from the envelope phase measurements
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channel(i1)/bandwidth(i2)/phase_quadratureVstructure¶In-phase and Quadrature components of the analysed signal. […]
In-phase and Quadrature components of the analysed signal. They are returned by an IQ-detector, that takes carrying and reference signals as the input and yields I and Q components. These are respectively stored as the first and the second index of the first dimension of the data child.
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channel(i1)/bandwidth(i2)/time_detector(:,:) ⇹sFLT_2D¶High sampling timebase of the IQ-detector signal measurements
High sampling timebase of the IQ-detector signal measurements
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New in version >3.32.1.
channel(i1)/n_e_linem^-2structure¶Integral of the electron density along the line of sight, deduced […]
Integral of the electron density along the line of sight, deduced from the envelope phase measurements
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channel(i1)/n_e_profile_approximationstructure¶Approximation of the radial electron density profile with an […]
Approximation of the radial electron density profile with an array of parameters and an approximation formula, used by post-processing programs for the identification of the electron density profile.
channel(i1)/n_e_profile_approximation/formulastructure¶Analytical formula representing the electron density profile […]
Analytical formula representing the electron density profile as a function of a radial coordinate and adjustable parameters f(rho_tor_norm, alpha1, … alphaN)
This is an identifier. See refractometer_formula_identifier for the available options.
channel(i1)/n_e_profile_approximation/formula/nameSTR_0D¶Short string identifier
Short string identifier